Enigma Variations describes the grim, yet at times hilarious, conditions endured by the rank and file who were essential supporters of the brilliant cryptanalysts at Bletchley. It is a portrait of humour and tragedy culminating in a harrowing mystery when Irene Young's husband vanished while on active service with the SAS in France.The title takes its name from the Enigma enciphering machine at Bletchley, but it also refers to the character of Irene's husband, and his disappearance. These variations on the theme of enigma are linked together in a beautifully written social document about destiny and fate - now updated with a new postscript.